Nanoparticle Assemblies in Electronic Applications

Nanoparticle assemblies constitute an emerging platform for next-generation electronics, exploiting organised clusters of metal, semiconductor or hybrid nanoparticles to engineer charge transport, optical response and functional interfaces at the nanoscale. By tailoring interparticle spacing via surface ligands or dielectric shells, researchers can promote quantum tunnelling, classical percolation or plasmon-enabled transport across two- and three-dimensional networks. Self-assembly strategies, including directed solvent evaporation, template-guided deposition and Langmuir–Blodgett techniques, yield ordered arrays with controllable electronic coupling. Such assemblies underpin a range of devices: flexible conductive films for wearable sensors, single-electron transistors exhibiting Coulomb blockade, chemiresistors for selective ion detection, memory elements based on resistive switching and neuromorphic circuits that mimic synaptic behaviour. Advances in ligand design and core–shell architectures have extended tunnelling distances beyond conventional limits and enabled temperature-independent conduction. Integration of plasmonic nanoparticles has introduced light-to-current conversion, opening pathways to optoelectronic memory and photonic interconnects. The modularity of nanoparticle building blocks, combined with low-temperature, solution-processable fabrication, heralds scalable and versatile electronic platforms with global impact in portable diagnostics, energy harvesting, information processing and adaptive circuitry.

Research from Nature Portfolio

Recent studies have reported the fabrication of dense membranes formed by core–shell Au@SiO₂ nanoparticles assembled into multilayered nanomembranes that facilitate unprecedented temperature-independent electron transport across cumulative dielectric gaps up to 29 nm, suggesting a plasmon-enabled tunnelling mechanism that far exceeds typical quantum limits. Another investigation has demonstrated in situ assembly of single-particle junctions using carbon nanocapsules encapsulating lanthanum dicarbide, revealing that contact resistance and predominant current paths depend sensitively on the atomic configuration at the metal–capsule interface. These works showcase how precise control of nanoparticle interfaces and plasmonic interactions can extend the functional range of nanoelectronic elements.

Nanoparticle Assemblies in Electronic Applications publication trend

The graph below shows the total number of articles in nanoparticle assemblies in electronic applications across all publications each year (not limited to Nature Index journals).

Technical terms

Nanoparticle assembly: Organisation of nanoparticles into ordered or disordered networks to control collective electronic and optical properties.

Quantum tunnelling: Charge transfer across a barrier when electron wavefunctions penetrate an insulating gap at the nanoscale.

Surface plasmon resonance: Coherent oscillation of conduction electrons in metal nanoparticles excited by incident light, enhancing local electromagnetic fields.

Coulomb blockade: Suppression of electron transport through a small conductor due to energy cost associated with adding a single charge.

Percolation: Transition to a conducting state in a network when particle connectivity reaches a critical threshold, enabling classical charge flow.

Ligand: Organic molecule bound to a nanoparticle surface that modulates interparticle spacing, stability and electronic coupling.

Single electron transistor: A device in which electron transport through a discrete nanoparticle island is controlled one electron at a time, exhibiting quantised conductance.

References

1. Unconventional Breathing Currents Far beyond the Quantum Tunneling Distances in Large-Gapped Nanoplasmonic Systems. Nano Letters (2024).
2. Conduction Mechanism Switching from Coulomb Blockade to Classical Critical Percolation Behavior in Disordered Nanoparticle Array. Advanced Electronic Materials (2023).
3. The role of ligands in coinage-metal nanoparticles for electronics. Beilstein Journal of Nanotechnology (2017).
4. Harnessing Selectivity and Sensitivity in Ion Sensing via Supramolecular Recognition: A 3D Hybrid Gold Nanoparticle Network Chemiresistor. Advanced Functional Materials (2020).
5. Unprecedented efficient electron transport across Au nanoparticles with up to 25-nm insulating SiO2-shells. Scientific Reports (2019).
6. A Novel Fabrication of Single Electron Transistor from Patterned Gold Nanoparticle Array Template-Prepared by Polystyrene Nanospheres. Nanomaterials (2022).
7. Structures and electrical properties of single nanoparticle junctions assembled using LaC2-encapsulating carbon nanocapsules. Scientific Reports (2016).